Test dynamic first-class callable nullsafe method call

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: phpstan-bot

tests/PHPStan/Rules/Methods/NullsafeMethodCallOnFirstClassCallableRuleTest.php

@@ -27,7 +27,11 @@ public function testRule(): void
 			],
 			[
 				'Cannot combine nullsafe operator with Closure creation.',
-				28,
+				26,
+			],
+			[
+				'Cannot combine nullsafe operator with Closure creation.',
+				34,
 			],
 		]);
 	}

tests/PHPStan/Rules/Methods/data/nullsafe-first-class-callable.php

@@ -20,6 +20,12 @@ function test(?Foo $foo): void
 	$foo?->doFoo(...);
 }
 
+function testDynamic(?Foo $foo, string $method): void
+{
+	// dynamic method name - also a fatal error in PHP
+	$foo?->{$method}(...);
+}
+
 
 class HelloWorld
 {